Horseshoe.



ALBERT A. BUMBAUGH, OF FORT WAYNE, INDIANA.-

HORSESHOE.

Specification of Letters Patent.

Patented May 7, 1907.

Application filed June 4, 1906. Serial No. 319.989.

To a 1/;71/0727/ {It NMJ/Z/ concern:

Be it known that I, ALBERT A. BUMBAUe-n, a citizen of the United States, residing at Fort Wayne, in the county of Al len, in the State of Indiana, have invented certain new and useful Improvements in Horseshoes; and

I do hereby declare that the following is a full, clear, and exact description. of the inven tion, which will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, which form part of this specification.

My invention relates to improvements in horse shoes.

It is well known that a horse shod with a shoe having metal toe and heel calks often has great difficulty in. keeping upon his feet upon icy paved streets, particularly when paved with asphalt.

The object, therefore, of my present invention is to provide a cheap, simple and efficient horse shoe having toe and heel calks of rubber whose outer faces are roughened or corrugated to present a resilient frictional gripping surface, the said rubber calks being so constructed and arranged as to be conveniently detachable for repairs, and yet are firmly and immovably secure in position on the shoe.

My invention consists of a metallic plate of the usual horse-shoe contour having flanged inward extensions adapted to holdingly engage the corrugated rubber calks which are immovably secured therein by means of screws and rubber plugs.

The principal novel feature of my invention resides in the construction and arrange ment whereby the rubber calks are detachably mounted in position on the shoe, to facilitate repairing the same.

I accomplish the object of my invention by the mechanism illustrated in the accom panying drawings in which Figure 1 is a perspective view of my invention with one portion of the rubber toe calk broken away to show the relative arrangement of the means for rigidly securing the calks to the metal shoe plate. Fig. 2 is a bottom plan of my invention, or the side thereof adjacent to the hoof. Fig. 3 is a bottom plan of one of the rubber calks showing the screw-opening therein and showing by dotted outline the depth of the lateral recesses. Fig. 4 is an enlarged detail of one of the heel calks showing the manner of reinforcing a portion of the same by a surmounted steel plate. Fig. 5 1s a detail side view of the reinforcing steel plate having a plurality of pendent securing prongs.

Similar reference numerals indicate like parts throughout the several views of the drawings.

The body of the shoe consists of a metal plate 1 of the usual oblong contour and of proper dimensions and having a plurality of vertical nail openings 2 in the usual position and relative arrangement therein. This shoe-plate 1 is provided with duplicate inward extensions 3 of any desired contour, but preferably triangular as shown, and having the perimeter of its two outer sides provided with an upright flange l having its upper edge inwardly turned to a right-angular relation, thereby forming a lateral recess 5 adapted to holdingly engage a corresponding lateral ledge or flange on the rubber heel calk, hereafter described. The plate 1 also has a substantially right angular inward and rearward eXtension6 of proper dimensions to suport the rubber toe-calk 13. This extension as its upper sides provided with an upright flange 7 having its u per edge turned inwardly in substantialy right-angular relation thus forming a lateral recess 8 adapted to engage a corresponding lateral ledge or flange 9 on the said calk. The plate extensions 3 and 6 are also provided with screwthreaded openings 12 for the purpose hereafter described.

The heel calks 10 are solid. blocks of rubber identical in contour and construction, are preferably substantially triangular in crosssection, have their outer face corrugated or provided with a series of projections to afford. a hold or frictional surface to prevent slipping; and they have their outer edges provided with a lateral groove or recess 11 adapted to snugly receive the inturned edge of the flange 4. The toe calk 13 is also a solid block of rubber in the form of a sector of a circle whose inner sides are laterally grooved or recessed throughout their length to snugly receive the inturned edge of the flange 7, and it has its outer face corrugated or provided with a notched or roughened frictional surface to prevent slipping.

Each of the rubber calk blocks 10 and 13 has a central opening adapted to, snugly receive and securely contain a rubber plug 14 whose upper end preferably has a similar frictional surface.

A vertical opening of reduced size in coincident arrangement with the respective opening 12 leads from the bottom of the said plug opening, and is adapted to receive a screw 15, Fig. 1 whose head rests on the bottom of the plug opening, and whose lower screw-threaded end forms a holding engagement with the said screw-threaded openings 12, by which means the rubber ealks are rigidly secured in position under all conditions of service.

If desired a metal sleeve, not shown, can be arranged in that portion of the screw opening which is in the rubber calk to aid in resisting all lateral strain which might have a tendency to tear the calk by contact with the said screw, though this is not believed to be necessary, or even desirable.

It is well known that most horses wear out their toe and heel calks unevenly, because they do not set their feet down squarely in stepping. In such cases I reinforce that portion of the resilient calk subject to excessive wear by mounting a thin steel plate 16 thereon whose outer face is arranged flush with the outer face of the calk. This plate 16 is provided upon its inner face with a plurality of integral holding prongs 17 which in use are firmly embedded in the calk, but do not come into contact with the supporting portion of the shoe-plate.

While I have shown and described the calks 10 and 13 as made of rubber, they can also be made of paper, leather or other proper fibrous and more or less resilient material, though preferably of rubber, as described.

It is obvious that by the use of my improved horse shoe, with its resilient and friction surfaced rubber calks, a horse will travel upon a hard pavement with greater ease, less strain and jar, greater safety, par ticularly upon icy pavements, and with no appreciable noise,

It is also obvious that when any of the rubber calks are worn out they can readily be removed and replaced by any unskilled operator without removing the shoe from the horses foot, by the removal of the rub- I do not desire to be understood as limiting myself to any precise detail of construction or arrangement of any of the operating parts as they may obviously be indefinitely varied without departing'from the spirit and scope of my invention.

Having thus described my invention and the manner of employing the same, what I desire to secure by Letters Patent is:

1. A horse-shoe having inward lateral extensions at the heel and toe portions provided with converging inturned angle-bar flanges upon their opposite sides; detachable calks of rubber or other resilient material adapted for an interlocked engagement with the said flanges, and so arranged upon the said. extensions that the said calks will receive all lateral strains thereon at their converging sides and in the direction of their convergence, to prevent displacement thereof in use.

2. In a horse-shoe a shoe plate having inward lateral extensions at the heel and toe portions, provided with angle-bar flanges upon two of their opposite edges; removable calks of rubber or other resilient material adapted for an interlocking engagement with the said flanges; and means for rigidly securing the-said calks in position, consisting of a counter sunk screw and a surmounted removable plug of resilient material as described.

Signed by me at Fort Wayne, Allen county, State of Indiana, this 2nd day of June, A. D.

ALBERT A. BUMBAUGH. Witnesses:

WATTS P. DENNY, ADELIA'L. LUMBARD. 

